ebcc-sys 0.1.0

/*
 * Copyright (c) 2012, Mathieu Malaterre
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */
#include <assert.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>

#include "opj_config.h"
#include "openjpeg.h"

#define J2K_CFMT 0

void error_callback(const char *msg, void *v);
void warning_callback(const char *msg, void *v);
void info_callback(const char *msg, void *v);

void error_callback(const char *msg, void *v)
{
    (void)msg;
    (void)v;
    puts(msg);
}
void warning_callback(const char *msg, void *v)
{
    (void)msg;
    (void)v;
    puts(msg);
}
void info_callback(const char *msg, void *v)
{
    (void)msg;
    (void)v;
    puts(msg);
}

int main(int argc, char *argv[])
{
    const char * v = opj_version();

    const OPJ_COLOR_SPACE color_space = OPJ_CLRSPC_GRAY;
    unsigned int numcomps = 1;
    unsigned int i;
    unsigned int image_width = 256;
    unsigned int image_height = 256;

    opj_cparameters_t parameters;

    unsigned int subsampling_dx;
    unsigned int subsampling_dy;
    const char outputfile[] = "testempty2.j2k";

    opj_image_cmptparm_t cmptparm;
    opj_image_t *image;
    opj_codec_t* l_codec = 00;
    OPJ_BOOL bSuccess;
    opj_stream_t *l_stream = 00;
    (void)argc;
    (void)argv;

    opj_set_default_encoder_parameters(&parameters);
    parameters.cod_format = J2K_CFMT;
    puts(v);
    subsampling_dx = (unsigned int)parameters.subsampling_dx;
    subsampling_dy = (unsigned int)parameters.subsampling_dy;
    cmptparm.prec = 8;
    cmptparm.sgnd = 0;
    cmptparm.dx = subsampling_dx;
    cmptparm.dy = subsampling_dy;
    cmptparm.w = image_width;
    cmptparm.h = image_height;
    strncpy(parameters.outfile, outputfile, sizeof(parameters.outfile) - 1);

    image = opj_image_create(numcomps, &cmptparm, color_space);
    assert(image);

    for (i = 0; i < image_width * image_height; i++) {
        unsigned int compno;
        for (compno = 0; compno < numcomps; compno++) {
            image->comps[compno].data[i] = 0;
        }
    }

    /* catch events using our callbacks and give a local context */
    opj_set_info_handler(l_codec, info_callback, 00);
    opj_set_warning_handler(l_codec, warning_callback, 00);
    opj_set_error_handler(l_codec, error_callback, 00);

    l_codec = opj_create_compress(OPJ_CODEC_J2K);
    opj_set_info_handler(l_codec, info_callback, 00);
    opj_set_warning_handler(l_codec, warning_callback, 00);
    opj_set_error_handler(l_codec, error_callback, 00);

    opj_setup_encoder(l_codec, &parameters, image);

    l_stream = opj_stream_create_default_file_stream(parameters.outfile, OPJ_FALSE);
    if (!l_stream) {
        fprintf(stderr, "Something went wrong during creation of stream\n");
        opj_destroy_codec(l_codec);
        opj_image_destroy(image);
        opj_stream_destroy(l_stream);
        return 1;
    }
    assert(l_stream);
    bSuccess = opj_start_compress(l_codec, image, l_stream);
    if (!bSuccess) {
        opj_stream_destroy(l_stream);
        opj_destroy_codec(l_codec);
        opj_image_destroy(image);
        return 0;
    }

    assert(bSuccess);
    bSuccess = opj_encode(l_codec, l_stream);
    assert(bSuccess);
    bSuccess = opj_end_compress(l_codec, l_stream);
    assert(bSuccess);

    opj_stream_destroy(l_stream);

    opj_destroy_codec(l_codec);
    opj_image_destroy(image);


    /* read back the generated file */
    {
        opj_codec_t* d_codec = 00;
        opj_dparameters_t dparameters;

        d_codec = opj_create_decompress(OPJ_CODEC_J2K);
        opj_set_info_handler(d_codec, info_callback, 00);
        opj_set_warning_handler(d_codec, warning_callback, 00);
        opj_set_error_handler(d_codec, error_callback, 00);

        bSuccess = opj_setup_decoder(d_codec, &dparameters);
        assert(bSuccess);

        l_stream = opj_stream_create_default_file_stream(outputfile, 1);
        assert(l_stream);

        bSuccess = opj_read_header(l_stream, d_codec, &image);
        assert(bSuccess);

        bSuccess = opj_decode(l_codec, l_stream, image);
        assert(bSuccess);

        bSuccess = opj_end_decompress(l_codec, l_stream);
        assert(bSuccess);

        opj_stream_destroy(l_stream);

        opj_destroy_codec(d_codec);

        opj_image_destroy(image);
    }

    puts("end");
    return 0;
}